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Refresh rate

Feb 28, 2020

With the development and application of LED display technology, LED displays are widely used in command centers, monitoring centers and studios. When buying a screen, there are a lot of factors people need to consider, such as installation, warranty, brightness, budget and so on. In fact, refresh rate can be important in some venues, especially those with broadcast events.


Refresh rate of LED screen refers to the screen update rate, which is usually expressed in Hertz (Hz). Generally speaking, the higher the refresh rate, the more stable the screen display, and the smaller the visual flicker. LED display with the low refresh rate will have stripes that appear during video recording or photography. In order to get more clear pictures, such as wonderful playback or close-up photography, they are all shot with high-speed cameras above 1,000Hz per second. At this time, it is a great challenge for the LED display screen to present a continuous picture (no black scan line) or continuous color gradation under a high-speed shutter.


Normally 1920Hz refresh rate is good enough for most of the LED displays. If the LED display needs to display high speed action videos, or the LED display will be shot by the camera, the LED display with 3840Hz refresh rate can be chose.


For LED screens, increasing the refresh rate can decrease flickering, thereby reduce eye strain. However, if a refresh rate is beyond specified what is recommended for the LED screen, it will damage LED display. People should take refresh rate into account when choosing a LED screen according to their real requirements.